New hosts for Phyllactinia guttata in the Black Sea Region of Turkey

Abstract

Fungi belonging to the family Erysiphaceae (Ascomycota) are obligate biotrophs causing powdery mildew disease on various host plants. Most of the species in this family are ectoparasitic while the genus Phyllactinia is known to be partly endoparasitic. Phyllactinia guttata is one of the most important powdery mildews among Phyllactinia species causing disease on deciduous trees. In this study, P. guttata was detected on 11 woody plant species belonging to 8 families of Actinidiaceae, Betulaceae, Cornaceae, Fagaceae, Moraceae, Rhamnaceae, Rosaceae and Ulmaceae in 5 provinces in the Black Sea Region of Turkey. This is the first report of P. guttata on Actinidia deliciosa, Alnus glutinosa var. barbata, A. glutinosa var. glutinosa, Cornus mas, Cydonia oblonga and Fagus orientalis in the Black Sea Region of Turkey.

Keywords:

• Woody plants
• Phyllactinia guttata
• powdery mildew

Acknowledgements

We are grateful to Assoc. Prof. Dr. Seyed Akbar Khodaparast and to Prof. Dr. Hamdi Güray Kutbay for confirming the identifications of the fungus and plant specimens.